# SDR ASAA2021121436892

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 14, 2021
- Submitted: December 16, 2021
- Operation: Air carrier
- Aircraft: [N467AS](https://openairdocs.org/aircraft/N467AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 36362
- Aircraft time: 27,574 hours, 8,940 cycles
- System (JASC): [3460 · Flight Management Computing Hardware System](https://openairdocs.org/jasc/3460)
- Part: Unknown
- Part number: UNKNOWN
- Condition: Unknown
- Location: Unknown
- Stage of operation: CR
- How discovered: V
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2021121436892

## Discrepancy

FL 350 - AT TOP OF DESCENT LEFT FMC FAILED FOLLOWED SHORTLY AFTER BY THE RIGHT FMC. BOTH FMCS FAILED FOR ABOUT 10 TO 15 MINUTES AND THEN BOTH FMC'S CAME BACK ONLINE. GROUNDED - YES. PERFORMED B737-900 FIM 34-61 TASK 836 NO DEFECTS NOTED BOTH FMC'S RESET.

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